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Finding the Third Proportional to 28,379 and 61,089

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Solution

The third proportional to 28,379 and 61,089 is: 131,500.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,379 : 61,089 = 61,089 : x
  2. Step 2: Convert to fraction form
    28,379/61,089 = 61,089/x
  3. Step 3: Cross multiply
    28,379x = 61,089 × 61,089
  4. Step 4: Simplify right side
    28,379x = 3,731,865,921
  5. Step 5: Solve for x
    x = 3,731,865,921/28,379
  6. Step 6: Final answer
    x = 131,500.97

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.